[5.9][SourceKit] Pass 'swiftc' path to Driver when creating frontend args #65151
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Driver uses its path to derive the plugin paths (i.e. 'lib/swift/host/plugins' et al.) Previously it was a constant string 'swiftc' that caused SourceKit failed to find dylib plugins in the toolchain. Since 'SwiftLangSupport' knows the swift-frontend path, use it, but replacing the filename with 'swiftc', to derive the plugin paths. rdar://107849796 (cherry picked from commit 3517db4)
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airspeedswift
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Apr 14, 2023
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Cherry-pick #65068 into
release/5.9Explanation:
libDriveruses its path to derive the plugin paths (i.e.lib/swift/host/plugins) Previously it was a constant stringswiftcnot an actual path, that caused SourceKit failed to find dylib plugins in the toolchain. SinceSwiftLangSupportknows the swift-frontend path, use it, but replacing the filename withswiftc, to derive the plugin paths.Scope: Legacy
libDriverclients usinggetSingleFrontendInvocationFromDriverArgumentscurrently only SourceKitRisk: Low
Testing: Added regression test cases
Issue: rdar://107849796
Reviewer: Alex Hoppen (@ahoppen)